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15

System Pressure — This variable displays the static system
pressure through an integrated pressure sensor in increments of
0.1 in. wg. When Bypass Commissioning and Pressure Sensor
Cal are

Enabled

, the user may force this value to the correct

reading of the System Pressure as measured with calibrated test
equipment. From the forced value, the bypass controller calcu-
lates a calibration multiplier that will always be applied to the
System Pressure sensor reading. Once the multiplier is calcu-
lated, the force is removed and the multiplier is applied to the
System Pressure sensor reading.
System Pressure: Display Units

in. wg

Default Value

0.00

Display Range

0.00 to 2.00

Forcible

Yes

System Pressure Setpt — This variable displays the supply air
static pressure set point that is to be maintained by the bypass
controller. The bypass controller determines the damper posi-
tion by comparing the system static pressure to this set point.
When the user forces the System Pressure Setpt from this table,
the bypass controller automatically updates the System
Pressure Setpt configuration value in the Pressure Setpoint Ser-
vice Configuration Table.
System Pressure
Setpoint:

Display Units

in. wg

Default Value

0.50

Display Range

0.10 to 1.80

Forcible

Yes

Damper Cal Alarm — This variable displays

Alarm

if the

damper calibration process failed because there was an error
during the closed or open position calibration of the damper.

Normal

is displayed when a successful damper calibration

takes place.
Damper
Cal Alarm:

Default Value

Normal

Display Range

Normal/Alarm

Forcible

No

Press Sensr Cal Alarm — This variable displays

Alarm

if the

pressure transducer zero calibration process failed because the
pressure sensor voltage did not decrease to within the zero
pressure tolerance (1.0 ± 0.1 vdc).

Normal

will be displayed

when a successful pressure transducer zero calibration takes
place.
Press Sensr
Cal Alarm:

Default Value

Normal

Display Range

Normal/Alarm

Forcible

No

BYPASS CONTROLLER SYSTEM PILOT DEFAULT
MAINTENANCE TABLE — See Table 8 for Bypass Con-
troller System Pilot Default Maintenance (SP_MAINT).

Duct Temperature — This variable displays the duct tempera-
ture at the bypass damper through a 10K thermistor with a
measurement range from –40 to 245 F in 0.1º F increments.
Duct
Temperature:

Display Units

F (C)

Default Value

–40.0

Display Range

–40.0 to 245.0

Forcible

Yes

Damper Position — This variable displays the damper posi-
tion percent range of rotation determined by the damper feed-
back potentiometer. The bypass controller is designed for use
on dampers with a range of rotation up to 90 degrees.
Damper
Position:

Display Units

% open

Default Value

0

Display Range

0 to 100

Forcible

No

System Pressure — This variable displays the static system
pressure through an integrated pressure sensor in increments of
0.1 in. wg.

System Pressure: Display Units

in. wg

Default Value

0.00

Display Range

0.00 to 2.00

Forcible

No

System Mode — This variable displays the master zone con-
troller’s system mode as the bypass controller’s system mode
except when the bypass controller is in its commissioning
mode or the network communication fails. In bypass commis-
sioning mode, the system mode will display

BPCOMMIS

to in-

dicate the bypass controller is in its own commissioning mode.
If the network communication between the bypass controller
and the Linkage Coordinator zone controller fails, the system
mode will display

LOCAL

.

System Mode:

Display Units

ASCII

Display Range

HEATING, COOLING,
FREE COOL,
PRESSURE, EVAC,
ZONE_BAL, OFF,
BPCOMMIS, LOCAL

Forcible

No

Configuration Tables —

The bypass controller con-

tains the following configuration tables: Alarm Configuration
(ALMCONF), Bypass Controller Configuration (BP_SERV),
Device Configuration (BYPASS), Language Configuration
(LNGCONF), Duct Sensor Configuration (SEN_SERV), and
Set Point Configuration (SETPOINT).
ALARM CONFIGURATION TABLE — The Alarm Con-
figuration Table (ALMCONF) contains decisions used to con-
figure the alarm settings for the zone controller. This includes
realarm time and routing of alarms. See Table 9.

Table 8 — System Pilot Default Maintenance

Table 9 — Alarm Configuration

DESCRIPTION

VALUE

UNITS

STATUS

FORCE

NAME

Bypass Controller

Duct Temperature

73.8

dF

DUCT_TMP

Damper Position

0

%OPEN

DMP_POS

System Pressure

0.00

in H2O

SP_SENSR

System Mode

BPCOMMIS

SYS_MODE

DESCRIPTION

VALUE

UNITS

NAME

Alarm Routing Control

11010000

ROUTING

Re-alarm Time

10

min

RETIME

Содержание VVT 33ZC

Страница 1: ...oordinate up to 31 additional zone controllers The purpose of the Linkage Coordinator zone relationship is to provide an efficient data path for communica tion between the zone controllers bypass cont...

Страница 2: ...ding the damper shaft through the actuator clamp assembly See Fig 2 for details Remove the controller wiring access cover Secure the controller by installing the screw provided through the grommet in...

Страница 3: ...3 Fig 2 Bypass Controller Dimensions Fig 1 Bypass Controller Details...

Страница 4: ...ENSOR 1 6 J5 3 1 G CCN 3 3 G 1 1 5 1 6 1 J4 1 2 NOT USED NOT USED NOT USED DAT NOT USED NOT USED NOT USED NOT USED DAT TO COMMUNICATION BUS TO FEEDBACK POTENTIOMETER LINE VOLTAGE EQUIPMENT GROUND TO D...

Страница 5: ...p the grommet into the hole until it is secure Pull on the leads of the duct sensor until the sensor is snug against the grommet 3 Connect the sensor leads to the bypass controller s termi nal board a...

Страница 6: ...reverse rotation the actuator switch may be changed to the CCW position LINKED ACTUATORS Field supplied linked actuators may be used to link to the bypass controller actuator Install the actuators pe...

Страница 7: ...7 Fig 7 High Torque Actuator Wiring...

Страница 8: ...8 Fig 8 High Torque Actuator with Linked Dampers Wiring...

Страница 9: ...9 Fig 9 Field Supplied Linked Damper Wiring...

Страница 10: ...10 Fig 10 Multiple Field Supplied Linked Damper Wiring...

Страница 11: ...s cable a color code system for the entire network is recommended to simplify installation and checkout See Table 4 for the recommended color code Table 4 Color Code Recommendations 3 Connect the othe...

Страница 12: ...ew bypass pressure set point 10 Read the airflow with a measuring device If the reading varies from the screen value force the value to the mea sured value Once the pressure sensor is forced the contr...

Страница 13: ...iable displays whether the leaving air temperature exceeds the heating or cooling limit configured in the Bypass Controller Service Configuration Table If Yes is displayed the System Pressure Set Poin...

Страница 14: ...zone controller to turn the system fan off If the communication fails the damper calibration process will be terminated and this decision will be Disabled When the fan is off the zone controller will...

Страница 15: ...NT Duct Temperature This variable displays the duct tempera ture at the bypass damper through a 10K thermistor with a measurement range from 40 to 245 F in 0 1 F increments Duct Temperature Display Un...

Страница 16: ...efault Value Close Max Damper Alarm Limit This decision is used to gener ate alarms during system heating and cooling modes When the bypass damper position is greater than this configured limit and th...

Страница 17: ...ease to within the zero tolerance 1 0 0 1 vdc of the sensor The alarm is disabled if this decision is set to Disable Press Sensr Cal Alarm Default Value Enable Display Range Enable Disable Duct Temp C...

Страница 18: ...is off When the fan is off the bypass controller will drive its damper to the fully closed position The bypass controller will read the value of the actuator s feedback potentiometer until the value...

Страница 19: ...l terminate the calibration Once at the fully open damper position the bypass controller will read the output voltage of the pressure sensor If the voltage reads within the range of 1 0 vdc 0 1 volt i...

Страница 20: ...b 11a 13a Copyright 2004 Carrier Corporation SEN Fig 12 Bypass Controller Operation Flow Chart LEGEND BP Bypass BP_SETPT System Pressure Setpoint DAT Duct Air Temperature DMP_POS Damper Position LAT L...

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